Method of forming bail-ears on sheet-metal vessels.



No 694,644. Patentgd Mar. 4, I902.

c. a. HURNUNG & H. WOLF. METHQD 0F FORMING BAIL EARS 0N SHEET METAL VESSELS.

(Application. filed Apr. 18 1901.!

WITNESSES: IN VENTOHJ Arron/v5); z

m: uo mus PEFERS w. PHOTO-LITHQ, 'wAsHmuTan o c I instance, as the well-known lard-pails.

the bail.

UNITED STATES PATENT OFFICE.

CHARLES G. HORNUNG AND HENRY WOLF, OF BUFFALO, NEW YORK.-

METHOl) 0F FORMING BAIL-EARS 0N SHEET-METAL VESSELS.

SPECIFICATION formingpart of LettersP-atent No. 694,644, dated. March 4, 1902.

Application filed April 18, 1901. Serial No. 56,398. (No model.)

To (ZZZ whom it may concern:

Be it known that we, CHARLES G. HORN-- UNG and HENRY WOLF, citizens of the United of Erie and State of New York, have invented new and useful Improvements in Methods of,

Forming Bail-Ears on .Sheet-MetalVessels, of which the following is a specification.

Our invention relates to a method of forming bail-ears on sheet-metal pails-such, for It is essential that the construction of the ears and the method of making and applying the same be simple, so that the pails can be provided with the ears at a low cost, that the parts be of a construction to permit the ready assembling and rapid attachment of the same, and that when the parts are attached the connection be a neat, permanent, and tight one. The present invention is designed to fulfil these requirements.

In the accompanying drawings, which illustrate the parts on an enlarged scale,Figu re 1 is a side elevation of a fragment of a pail-body, showing one ear attached thereto. Fig. 2 is a cross-sectional viewof the same in line 2 2, Fig. 1. Figs. 3, 4, and 5 show the parts separated. Fig. 6 shows the first step in the assemblin g of theparts. Fig. 7 shows the parts assembled ready to receive pressure for interlocking the parts, as shown in Fig. 2.

Like letters of reference. refer to like parts in the several figures. I

The pail or vessel body a, of which a fragment is shown, has the opening I) for the bailear bent with'the edge inwardly to form'a flange 0. An internal groove (1 is preferably formed around the flange, forming a head on the Zexterior of the body about the ear-opening The cup-shaped ear 6 is of a diameter to snugly fit the ear-opening and is provided with aprojecting fiat base-flange g. This ear is provided in its crown with the usual central opening it to receive the hooked end of A locking-cap i completes the complement of parts to form the attachment. This cap is provided with a cylindrical peripheral flange or marginal wall m and is of such diameter as to fit snugly around the base-flange of the ear. The parts thus de- 16, these parts fitting each other closely enough to remain connected by frictional contact. The earis then inserted in the flanged opening from the inner side of the vessel and is pushed through until the edge of the flange of the cap bears against the inner side of the vessel around the ear-opening, as shown in Fig. '7. The parts thus assembled are then placed between compressiondies K L, Fig. 7, the cap resting on the lower die K and the upper die L bearing on the pail about the ear.

As the dies are forced toward each other the flanges of the opening and cap are bent or flattened, so as tointerlock with each other. The flange m of the cap is bent inwardly toward the flange of the opening along the inner surface of the body and the flange c of the opening is bent outwardly along the cap, and both flanges are tightly closed against each other, as shown in Fig. 2. Theinclined or curved surface of the groove d forms a guide for the edge of the cap-flange and greatly facilitates the bending of the same; but'this groove is not indispensable, as a pressure upon the edge of the flange will turn the flange toward the opening in any event. The flaring portion e at the base of the ear 6 forms a guide which facilitates the turning of the flange of the opening. The flanges of the opening and of the cap are thus tightly interlocked and pressed against the inner side of the vessel, around the opening thereof, and thebase-flange g of the ear is firmly clamped between said interlocking flanges and the bottom portion of the cap.

We claim as our inventionl. The herein-described method of securing a pail-ear to a vessel, consistingin forming an opening in the body of the vessel with an inwardly-extending straight flange, forming a pail-ear with an outwardly-extending baseflange, forming a cap with a straight marginal wall, assembling the parts with the marginal wall of the cap surrounding the base-flange of the ear, and then inserting the ear in the opening in the body of the vessel, and finally applying pressure to the parts to interlock ing the ear in the opening in the body of the said marginal wall and flanges, substantially vessel and finally applying pressure to the as described. assembled parts to interlock said marginal 15 2. The herein-described method of securing wall and flanges, substantially as described. 5 a pail-ear to a vessel consisting in stamping \Vitness our hands this 15th day of April,

an opening in the body of the vessel with a 1901. straight inwardly-extending flange and a sur- T 1 rounding groove, stamping out a pail-ear with UI\ a baseflange, stamping out a cap with a to straight marginal wall, assembling the parts Witnesses:

with the marginal wall of the cap surround- JNO. J. BONNER, ing the base-flange of the ear and then insert- CLAUDIA M. BENTLEY. 

